/*
 * Copyright 2018 beanit
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.beanit.iec61850bean.internal.cli;

import java.util.ArrayList;
import java.util.List;

public class StringListCliParameter extends ValueCliParameter {

    List<String> value;
    private List<String> defaultValue = null;

    StringListCliParameter(
            CliParameterBuilder builder, String parameterName, List<String> defaultValue) {
        super(builder, parameterName);
        this.defaultValue = defaultValue;
        value = defaultValue;
    }

    StringListCliParameter(CliParameterBuilder builder, String parameterName) {
        super(builder, parameterName);
    }

    public List<String> getValue() {
        return value;
    }

    @Override
    int parse(String[] args, int i) throws CliParseException {
        selected = true;

        value = new ArrayList<>();
        i++;
        while (i < args.length) {
            if (args[i].length() > 0 && args[i].startsWith("-")) {
                break;
            }
            value.add(args[i++]);
        }

        if (value.size() == 0) {
            throw new CliParseException("Parameter " + name + " has no value.");
        }

        return value.size() + 1;
    }

    @Override
    int appendSynopsis(StringBuilder sb) {
        int length = 0;
        if (optional) {
            sb.append("[");
            length++;
        }
        sb.append(name).append(" <").append(parameterName).append(">...");
        length += (name.length() + 6 + parameterName.length());
        if (optional) {
            sb.append("]");
            length++;
        }
        return length;
    }

    @Override
    public void appendDescription(StringBuilder sb) {
        sb.append("\t")
                .append(name)
                .append(" <")
                .append(parameterName)
                .append(">...\n\t    ")
                .append(description);
        if (defaultValue != null) {
            sb.append(" Default is \"");
            for (String stringValue : defaultValue) {
                sb.append(stringValue);
            }
            sb.append("\".");
        }
    }
}
